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Flashcards in Chapter 4 Deck (23):
1

The entire group of individuals about which we want information from

Population

2

The part of the population from which we actually collect information

Sample

3

Collecting data from each member of a population is called

Census

4

We use information from the ____ to draw conclusions about the entire ____

Sample, population

5

The two steps in planning as sample survey is to say exactly _________ and to say exactly ________

What population we want to describe, what we want to measure

6

The population in a sample survey can consist of

People, animals, or things

7

Choosing individuals who are easiest to reach results in a

Convenience sample

8

The design of a statistical study shows ____ if it’s systematically favors certain outcomes

Bias

9

A ______ consisted of people who choose themselves by responding to a general appeal. These show ___ because people with sting opinions Re most likely to respond

Voluntary response sample, bias

10

______, the use of chance to select a sample, is the central principle of statistical sampling

Random sampling

11

A sample chosen by ___ rules out both favoritism by the sampler and self-selection by the respondents

Chance

12

In statistics, the word ____ means due to chance

Random

13

A ________ of size n consists of n individuals from the population chosen in such a way that every set of n individuals has an equal chance to be the sample actually selected

Simple random sample

14

To select a _________ first classify the population into groups of similar individuals called ___

Stratified random sample, strata

15

To take a _______ first division the population into smaller groups called _____ that mirror the characteristics of the population

Cluster sample, clusters

16

The difference between strata and clusters, we want each ______ to contain similar individuals and we want each _____ to look just like the population

Stratum, cluster

17

Most large-stage sample surveys use ________ that combine two or more sampling methods

Multistage samples

18

The process of drawing conclusions about a population on the basis of sample data is called

Inference

19

A ______ is a list of individuals from which we draw our sample

Sampling frame

20

______ occurs when some groups in the population are left out of the process of choosing the sample

Undercoverage

21

______ occurs when an individual chosen for the sample can’t be contacted or refuses to participate

Noresponse

22

A systematic patter of incorrect responses in a sample survey leads to

Response bias

23

The ________ is the most important influence on the answers given in a sample survey

Wording of questions